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\setbeamerfont{title}{size=\large}
\setbeamerfont{subtitle}{size=\normalsize}

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\setbeamerfont{block title}{shape=\upshape,series=\bfseries}

% Use slightly more leading than normal.
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% The references can be tiny.
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\setbeamerfont{bibliography entry title}{size=\footnotesize}
\setbeamerfont{bibliography entry location}{size=\footnotesize}
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